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In the UK, the cheapest city to buy a cup of Joe is Dundee, where it's £1.43 on average - and, unsurprisingly, London is last in the UK, costing £1.62.

Starbucks prices were also notably cheaper in South America - with a coffee from the chain only £1.21 compared to London's price of £2.80. But that's nothing compared to Zurich, where a single cup will set you back a whopping £5.72.

Rio de Janeiro is the cheapest place to grab a coffee worldwide

Prices at independent coffee shops were usually higher than at Starbucks or the supermarket - except in France, Italy and Spain.

Sven Hock, CEO of researchers Service Partner ONE said: “Coffee is the fuel of every office, it is not only part of our culture, it is a culture.

"Whether you’re sitting down with an old friend, enjoying a cup with your spouse, or taking a break with your colleagues, coffee brings us together and motivates us.”

Dundee is the cheapest place for coffee in the UK, and London the most expensive

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London is the most expensive UK city for coffee, with Dundee the cheapest

Customers rushing to grab a drink at rail and airport concessions have to pay up to 35p more for the same product as a branch off the street.

In five London stations — Euston, King’s Cross, Victoria, Waterloo and Liverpool Street — the charge was 30p more than the nearest street ­Starbucks.

To calculate the cheapest and most expensive coffees, Service Partner ONE compared the median cost of a coffee at home, the cost of a Grande Latte in Starbucks, the average costs of a cup in an independent coffee shop and the average cost to a company per cup in the office.

These figures were then averaged to create a cost for each city.

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Researchers compared the price of coffee at home, work, in Starbucks and at an independent coffee shop

Chris Stemman, executive director of the British Coffee Association said: “Coffee prices vary in different countries depending on whether or not it is imported, Rio de Janeiro for instance does not import coffee as it is a produce grown in Brazil and much of Latin America.

"Additionally, pricing depends on the type of coffee bean that is commonly consumed, in the UK we favour Arabica for its smoother taste but this is a premium priced bean. Comparatively in France and other countries the Robusta bean is popular and this is priced more cheaply compared to Arabica.

"Finally, and specifically to the UK, the weakening of the pound has had an impact on coffee, which is traded as a dollar commodity, so again the cost of importing coffee into the UK has risen.”

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